In this work, it is found that the hydrothermally-synthesized bismuth oxychloride (BiOCl) can behave both the piezocatalysis and photocatalysis for the rhodamine B dye decomposition. ∼99% decomposition efficiency is achieved after both vibrating and lighting the rhodamine B dye solution for ∼96 min with the addition of BiOCl catalyst, while the ∼72% and ∼26% decomposition efficiencies are obtained for only photocatalysis or only piezocatalysis respectively. In bi-catalysis, the mechanical strain produced due to vibration will directly provide an electric field that will increase the separation between the photo-induced electron-hole pairs, yielding to the enhanced decomposition performance of bi-catalysis. There is no significant change in the bi-catalytic performance of BiOCl nanomaterial observed after being recycled four times. BiOCl catalyst is potential for the bi-catalytic decomposition treatment of wastewater through harvesting both the environmental vibration energy and light energy.

在这项工作中，发现水热合成的三氧化二铋（BiOCl）既可以进行罗丹明B染料分解的压电催化作用，又可以进行光催化作用。在添加BiOCl催化剂的情况下，若丹明B染料溶液在振动和光照下约96分钟后，分解效率达到约99％，而仅光催化或压电催化分别获得约72％和约26％的分解效率。在双催化中，由于振动而产生的机械应变将直接提供电场，该电场将增加光致电子-空穴对之间的间隔，从而提高双催化的分解性能。回收四次后，BiOCl纳米材料的双催化性能没有显着变化。